Fixing the shasum on the pam_yubico tarball.

The shasum on this file was incorrect as shown below.

$ gpg pam_yubico-2.14.tar.gz.sig
gpg: Signature made Fri 27 Sep 13:06:03 2013 BST using RSA key ID 9D1C0E79
gpg: Good signature from "Klas Lindfors <klas@yubico.com>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 0730 F1B6 A662 9329 D439  84C9 29AF 24EA 9D1C 0E79

$ shasum pam_yubico-2.14.tar.gz
3dd6bddce69785c5d61ae0f64ba568e1a81498a1  pam_yubico-2.14.tar.gz

I have updated the shasum to ensure this will install.